Cracroft's Peerage contains over three thousand articles on the Royal Family, peerage titles, baronetcies, etc.:

The British Monarchy: articles covering topics such as

The Royal Family

detailed narrative pedigrees of the English and British Kings from 1066 and the Scottish Kings from 1034

Seize Quartiers of the Kings and Queens from King Henry VII onwards

Hereditary Peerages: articles divided into the five Peerages of England, Scotland, Ireland, Great Britain and the United
Kingdom for easy reference

narrative pedigrees of all current hereditary peerages and the more important extinct peerages

listings of all extinct and dormant peerages

Life Peerages

brief details of all life peerages created under the Appellate Jurisdiction Act 1876
(the Law Lords)

brief details of all life peerages created under the Life Peerage Act 1958

Baronetcies

brief details of all current baronetcies

listings of all extinct and dormant baronetcies

British Titles by the late Valentine Heywood

extensive extracts from this important work on British titles by kind permission of the publishers

Heraldry and the Peerage

an easy to understand explanation of the coat-of-arms of a peer

Prime Ministers since 1721

as the first of a series on the Great Office holders, this article shows how a large number of
British Prime Ministers had or have close family connections with the Peerage

Orders of Chivalry and Merit

an overview of the British Orders of Chivalry

detailed listings of the past and present holders of the three leading British Orders
(the Garter, the Thistle and St Patrick) with links to biographical
information on holders who were or are members of the Peerage